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Latest Dealer ECM flash - warm start high idle

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Latest Dealer ECM flash - warm start high idle

 
Old 12-04-2018, 04:19 PM
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Latest Dealer ECM flash - warm start high idle

So in getting my annual service done there was an ECM flash that the dealer did.

Now when the car is warm, when starting most of the time it does a high idle run for a similar amount of time it used to do only when doing a cold start.

Anybody else experience this and does this sound right?
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Old 12-04-2018, 04:50 PM
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Someone else on here had the same issue several months back. I donít remember what the solution was.
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Old 12-04-2018, 05:37 PM
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Originally Posted by HTXgearhead View Post
Someone else on here had the same issue several months back. I donít remember what the solution was.
Hmmm, I guess I'll be back to the dealer again......
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Old 12-04-2018, 08:17 PM
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i dont think its an issue. i believe mine now does that as well. I just updated my vehicle as well.
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Old 12-04-2018, 08:54 PM
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Personally wouldnt mind a louder start when warm... Im doing my service next monday will update if its the same for me
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Old 12-05-2018, 02:48 AM
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Originally Posted by Bueller178 View Post
So in getting my annual service done there was an ECM flash that the dealer did.

Now when the car is warm, when starting most of the time it does a high idle run for a similar amount of time it used to do only when doing a cold start.

Anybody else experience this and does this sound right?
What year is your car?

Did you ask them to flash it or did they do it without you asking ?


​​​
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Old 12-05-2018, 10:23 AM
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Originally Posted by Dieseldan9 View Post
What year is your car?

Did you ask them to flash it or did they do it without you asking ?


​​​
It's a 2017 and it was apparently listed in their system as needing the SW update (I think it did other things as well as my bluetooth seems to connect to my phone quicker) so they did it as part of the B Service.

While I Like the bark when it starts, it takes quite a while for the idle to settle down just like if the engine was stone cold.

I'll query the dealer next time I'm around there.
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Old 12-05-2018, 11:22 AM
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Originally Posted by Bueller178 View Post
It's a 2017 and it was apparently listed in their system as needing the SW update (I think it did other things as well as my bluetooth seems to connect to my phone quicker) so they did it as part of the B Service.

While I Like the bark when it starts, it takes quite a while for the idle to settle down just like if the engine was stone cold.

I'll query the dealer next time I'm around there.
I had mine in yesterday for airbag recall, rattle fixes and the trim piece where the center console button is was delaminating. They stated they did a fuel system software update that was recommended and I'm now seeing this as well. I don't see how the slightly higher start-up RPM could be an issue, so long as the RPMs eventually run back down to normal idle. Nothing to worry about in my book.
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Old 12-05-2018, 11:34 AM
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Originally Posted by RichardCranium3 View Post
I had mine in yesterday for airbag recall, rattle fixes and the trim piece where the center console button is was delaminating. They stated they did a fuel system software update that was recommended and I'm now seeing this as well. I don't see how the slightly higher start-up RPM could be an issue, so long as the RPMs eventually run back down to normal idle. Nothing to worry about in my book.
Putting it into gear from 1400 rpms would be a bit harsh on the trans would be my first concern.
So what I'm doing is waiting for it to settle down first but that of course means waiting around while it decides what it's doing.
I'm just curious why it needs to do it at all, it's essentially emulating a cold start but that's not necessary when everything is already toasty warm.
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Old 12-16-2018, 08:47 PM
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Experiencing the exact same thing here. Dealer says its normal even though it wasn't doing it prior to the update. Also lost the shift UP indicator in manual mode. Only the color indicators remain.
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Old 12-16-2018, 10:12 PM
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Originally Posted by lboudreau View Post
Experiencing the exact same thing here. Dealer says its normal even though it wasn't doing it prior to the update. Also lost the shift UP indicator in manual mode. Only the color indicators remain.
They still haven't fixed that huh? Lost my "UP" thing probably 9 months ago now.
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Old 12-19-2018, 06:48 AM
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I'm hoping with persistence they'll address it. It's going back this week for some other stuff. I've also noticed boost is very inconsistent after it "cold" starts again. I don't believe this latest software update is completely bug free.
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Old 12-20-2018, 11:29 AM
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Greetings. I just got the flash as well.

After the 30 minute drive back to work, I scrolled through to check my mileage.

NO MPG calculations. Not on trip. Not on Effeciency (?) graph.

Back to dealership through 30 minutes of Christmas shopping traffic craziness.
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Old 12-21-2018, 11:58 AM
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I had mine updated on Tuesday. Now when I start the car in Sports+, the exhaust crackles and pops 3-4 times (sounds amazing). I lost my tune so I'll have to redo that but it's solid for now. I also noticed that the car stays in high RPMs for MUCH longer in Sports+ with the update. I used to do a ton of highway driving in that mode and it was always "comfortable". Now it's impossible to drive in that mode without manually shifting or dealing with really high RPMs (not complaining, just a change I noticed).
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Old 12-22-2018, 11:13 AM
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I'm bringing mine in for the 40k Service B in about 2 weeks. Is this ECM flash update happening across the board to everyone?
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Old 12-27-2018, 10:47 PM
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Looks like someone else is having the same cold start issue even when the car is warmed up.

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